I am considering making a cheap spindle for use at 10+K rpm or so, based off of a ER16 collet chuck. (No, Evan, I don't want to use a grade 8 bolt.) It would only need to be good enough to cut steel sheet metal with a 1/8" end mill. I know the correct way is the matched pair of angular contact bearings + another bearing at the end, but it appears that many spindles, including the ones used in the Sherline mills, just use two regular deep groove radial bearings plus some preload. I intend to attach a pulley to this and drive it with the spindle of another mill, which happens to be limited to 5k rpm.
My questions are:
Will this be good enough for what I want to do?
How do I attach the bearings to the collet chuck in a concentric manner? If I get a bearing with the same diameter as the shank, I don't know what kind of a fit it will be, e.g. press fit, loose slip fit, etc.
Is there some other cheap bearing configuration that will also work?
My questions are:
Will this be good enough for what I want to do?
How do I attach the bearings to the collet chuck in a concentric manner? If I get a bearing with the same diameter as the shank, I don't know what kind of a fit it will be, e.g. press fit, loose slip fit, etc.
Is there some other cheap bearing configuration that will also work?
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